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Around 180,658 companies use SSIS today across the globe and with 237,000+ jobs currently available across the US (Source: Linkedin). The SSIS profession is really high in demand. So, are you willing to shape your career as an SSIS professional? You have reached the right place then; here we are going to cover all of the possible SSIS interview questions that can be asked to an experienced or fresher candidate for SSIS. So, are you ready to crack the SSIS interview questions profile!
Let’s get going!
Here are the interview questions on SSIS often asked to freshers or individuals applying for entry level positions.
In these SSIS interview questions. SSIS is known as SQL Server Integration Services that is a component of Microsoft SQL Server. It can be used to accomplish a wide range of data migration tasks. It is an ETL tool that is mostly used to handle data extraction, transformation, and load operations. Apart from ETL tasks, it can also handle many other tasks like data profiling, file system manipulation, etc. Many batch operations can be performed in SSIS by using VB.Net or C#.Net languages.
Important SSIS components of the package are listed below:
In these SSIS interview questions. Through the control flow option, you can logically and graphically link the tasks and program them graphically. The three logical connectors that are used in SSIS are success, failure and complete. By using FX (expression) you can handle more complex conditions of the control flow.
Sequence Containers: They are basically used to group similar tasks. Sequence containers are like an organization container that is used for complex SSIS packages.
The loop containers are used to execute any task for a particular number of times, like if you want to update the records ten or more than 10 times then you can use “for” loop containers. Here the user need not create ten different packages to execute or complete the task, nor do you need to run the whole package ten times while scheduling the job.
If you don’t know ahead of time the number of times for which the task will be executed, then you can use it for each loop container. Like if you want to delete all files from any particular folder and you don’t know the number of files that are contained in the folder, then by using for each loop you can select the files and delete them at once, in this container you will be informed when all of the files will be deleted. This is an important answer to these kinds of SSIS interview questions.
When development packages are converted to the executable packages then it is known as deployment. SSIS packages can be directly deployed by right-clicking the projects of integration services and building it. After selecting deployment, the ‘package.dtsx’ file is saved in the project bin folder. Moreover, by the deployment utility, the packages can be directly deployed at any location or SQL Server. Below-listed steps are followed to create the deployment utility:
Right-click on the Project and select properties
Select “True” to create Deployment Utility Option, you can also set the deployment path. After making changes, close the window. Now build the project by right clicking on it.
In the Bin folder a deployment folder will be created of the main project location. Here, find the manifest the file, by double clicking on this you can find the deploy package on SQL Server
Data flow from the corresponding source to the desired destination is known as the data flow. This is an important answer to these kinds of SSIS interview questions.
A Task is just like the programming language methods that carry or represent an individual work or task. Tasks are of the following two types:
Various connection types that work within SSIS are:
To know how these files can be connected with a database using SSIS tool, register for the demo class with JanBask Training now and give new wings to your career to fly higher. This is an important answer to these kinds of SSIS interview questions.
The logical task sequence can be defined by precedence constraint, logical sequence is basically the order of the tasks in which they should be executed. All tasks can be connected by using precedence constraints. This is a Key response to these types of SSIS interview questions.
Connection managers are found much helpful at the time when data has to be gathered from various sources to write it to any desired destination. Connection managers provide much useful information to the system like server name, data provider information, database name, and authentication mechanism, etc. This is an important answer to these kinds of SSIS interview questions.
To get a complete SSIS interview questions and answers pdf for beginners, get here!
SSIS packets are organized collections of different connections and items related to data flow, event handlers, variables, control flow, which would be used for assembling and programmatic construction of graphics design tools. This is a Key response to these types of SSIS interview questions.
The manifest file is the utility with useful information to deploy packages using the file system wizard and the SQL server database. This is an important answer to these kinds of SSIS interview questions.
Data transformation is the process of extracting the necessary data from a data source and is the most critical step in SSIS. After extraction, the process helps to manage and transfer data to a specific file destination. This is an important answer to these kinds of SSIS interview questions.
To identify errors, errors must be recorded. SSIS components - source, processing, and destination.all have been supported to record errors at the exit via a secondary pipe by providing means to define behaviors as errors occur. This is a Key response to these types of SSIS interview questions.
Process bytes represent the amount of memory presently used by integration services. This memory cannot be shared in another process. This is an important answer to these kinds of SSIS interview questions.
This is a Key response to these types of SISS interview questions.
The SSIS catalog is typically defined as the database used to store all deployed packages.This is mostly used to enhance the security of stored packets. Additionally, it is also useful in the processing and control of deployed packets. This is an important answer to these kinds of SSIS interview questions.
A breakpoint is an SSIS property that allows developers to pause the execution of the package in the BI system. The use of the breakpoint is widespread as it helps to suddenly stop running at any desired point and allows developers to reconsider the status of the entire package. This is an important answer to these kinds of SSIS interview questions.
Bulk Insert Task is used to download a huge amount of data from flat files in Sql Server. This only supports OLE DB connections for that destination of the database. This is a Key response to these types of SSIS interview questions.
The SSIS creates two kinds of variables: global variables and task-specific variables. The scope of global variables is available for every task in a given process. Task specific variables are task-specific in scope. This is an important answer to these kinds of SSIS interview questions.
Some of the other tasks managed by the ISS are data profiling, efficient batch rationalization and system ranking. This is a Key response to these types of SSIS interview questions.
The control flow is that which determines the flow or process of the packet. The data flow is a subset of the control flow. With no control stream, the data stream cannot function. This is an important answer to these kinds of SSIS interview questions.
When the package is transferred with the help of the wizard on the file system and the SL server, it is known as the Manifest file. This is a Key response to these types of SSIS interview questions.
The ignore failure option in SSIS is primarily used to ignore errors during the conversion process. Using this, an error is ignored, and the data line is iterated to proceed to the next transform. This is an important answer to these kinds of SSIS interview questions.
When a set of rules or functions is applied to the data extracted from the source in such a way that they can be loaded on the final result, they are known as data transformation. This is a Key response to these types of SSIS interview questions.
If the packet is executed within SQL Agent, we can explicitly kill the whole process by implementing T-SQL. And if the packet is executed in the SSIS catalog, we need to use the stored stop-operation method. This is an important answer to these kinds of SSIS interview questions.
SQL Server Integration Services (SSIS) is a component of SQL Server which can be used to perform a wide range of Data Migration and ETL operations. SSIS is an important component in the MSBI process of SQL Server.
This is a platform for Integration and Workflow applications. It is known for a fast and flexible OLTP and OLAP extensions used for data extraction, transformation, and loading (ETL). The tool may also be used to automate maintenance of SQL Server databases and multidimensional data sets.
Well, Solution Explorer in SSIS Designer is a screen where you can view and access all the data sources, data sources views, projects, and other miscellaneous files. These types of questions are mainly asked in interview questions for SSIS.
In SSIS, event logging allows you to select any specified event of a task or a package to be logged. It is beneficial when you are troubleshooting your package to acknowledge the performance package. This is an important answer to these kinds of interview questions for SSIS.
SSIS operates using buffers; it is a kind of an in-memory virtual table to hold data. It is a very important answer to these kinds of ssis interview questions and answers.
Checkpoint data is not saved for For Each Loop and For Loop containers. This question is basically asked in interview questions for SSIS.
Well basically a checkpoint used in SSIS to allow a package to restart at the point of failure.Hope you got the answer for ssis interview questions and answers.
Here are the SSIS interview questions for experienced professionals.
The process of analyzing the source data for better understanding and organizing it properly is known as data profiling. In this process, various tasks related to data like cleaning of data, identification of data patterns and numbers or nulls in data is known as data profiling. Data profiling step is performed when a project starts or at the beginning of the project development cycle and it supports database destination design schema. While developing normal recurring ETL packages this task is not usually used.
Data from two paths can be merged into a single path by Merge transformation. This transform is found useful when the data flows through a path that can handle certain errors and merge back into the main data source. Prior to merging transformation data should be sorted that can be done by using sorting transformation. For all paths metadata must be the same as the customer id field type cannot be numeric type is one path and character type in another. Union All transformation works like the Merge transformation, but here in this transformation sorted data is not required. Here the output from multiple sources is taken and then it is transformed and combined to form a single result set. This is an important answer to these kinds of SSIS interview questions.
The Execute Package Task helps the user to create parent packages that can execute the child packages. When any package starts growing then this capability is found much useful. Package separation into separate workflows makes testing and development processes shorter and helps in development practices as well. The majority of the configurable properties are found in the Task editor of the Executable package. This is an important answer to these kinds of SSIS interview questions.
The Logical task sequence is defined by the precedence sequence. The logical sequence is the sequence of the task in which their execution is being performed. All tasks can be connected by using connectors precedence constraints. This is a Key response to these types of SSIS interview questions.
The project can be restarted from the point of failure when checkpoints are specified. File information is stored by the checkpoints, if the package is being run successfully then the checkpoint file is being deleted or else the file restarts from the point of failure. This is an important answer to these kinds of SSIS interview questions.
All tasks and SSIS packages have a property that is known as Logging Mode. The three values that are accepted by these properties are:
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Various types of data viewers in SSIS are listed below:
This is a Key response to these types of SSIS interview questions.
The task execution is performed only when the specified condition is being satisfied. As per the condition satisfied the corresponding path is adopted by the task. It may have the following listed three parameters:
Completion: When the preceding container execution gets completed regardless of the success or failure of the task, only then the workflow gets preceded.
Success: When the preceding container gets executed successfully, then it is marked as successful and is represented by a solid green line.
Failure: When the preceding container execution fails, it gives the red color line as an indication.
Constraint/Expression with Logical AND: When any constraint evaluates to true then execution gets evaluated. A solid color line indicates the expression’s control flow. This is an important answer to these kinds of SSIS interview questions.
Conditional Split transformation is just like IF condition, it checks for the condition and evaluates the expression accordingly. This is a Key response to these types of SSIS interview questions.
SSIS packages can be saved in the following locations:
This is a Key response to these types of SSIS interview questions.
Yes. ISS supports logging, which allows the system to analyze and write log entries during execution events. This is an important answer to these kinds of SSIS interview questions.
The script task uses the property named Variables of Dts to read and write to the variable objects in the package. In order for the variables to be available for the custom script, we have to add them to lists of read-only or read-write variables. This is a Key response to these types of SSIS interview questions.
Either within the package, you can add a Send Mail task to the event handlers, or you can even set the notification in SQL Agent when the package is running. This is an important answer to these kinds of SSIS interview questions.
To deploy the SSIS package, we must run the manifest files and determine if they should be deployed in File System or SQL Server. This is an important answer to these kinds of SSIS interview questions.
Late arrival dimensions are inevitable; to manage them, we can create a fictitious dimension with a natural/business key and retain the remaining attributes as null or default. Thus, when the real dimension arrives, the fictional dimension is updated with the change of type 1. It is also called Inferred Dimensions. This is a Key response to these types of SSIS interview questions.
The best and quickest way to do incremental loading is to use the timestamp column in the source table and store the latest ETL timestamp. This is an important answer to these kinds of SSIS interview questions.
This is mostly used to provide different inputs to the connection handler about different properties. This is a Key response to these types of SSIS interview questions.
You can do this using the TEXT QUALIFIER property. This is an important answer to these kinds of SSIS interview questions.
Once the data is read into a table with CDC enabled, this transformation sends the data that should be deleted, inserted, and updated in a different path. This is a Key response to these types of SSIS interview questions.
There are two different types of transformations
This is a Key response to these types of SSIS interview questions.
By using CDC, we can maintain and interact with the SQL Server change capture function. This is an important answer to these kinds of SSIS interview questions.
The best and quickest way to do incremental loading is to use the timestamp column in the source table and store the latest ETL timestamp. This is a Key response to these types of SSIS interview questions.
There is no better value, it depends a lot on the design of the database, the number of users, the type of equipment you use, and so on. This is an important answer to these kinds of SSIS interview questions.
Execution trees specify how buffers and threads are assigned within the packet. They demonstrate how packets utilize buffers and threads. When running, the data flow engine shuts down Data Flow work operations. This is a Key response to these types of SSIS interview questions.
Executing SQL allows you to execute an SQL statement against a relational database. This is an important answer to these kinds of SSIS interview questions.
A package that successfully runs in BIDS and fails from the SQL agent job may mean that the SQL Agent jobs do not have the required permissions for some connections of the package. We can either create a proxy account that allows SQL Agent work to run the packet or raise the permissions on the current account. This is an important answer to these kinds of SSIS interview questions.
Analysis Services is the only main component in SQL Server using which we can perform Analysis and Forecast operations.
SSAS is very easy to use and user-friendly.
Faster Analysis and Troubleshooting.
Ability to create and manage Data warehouses.
Apply efficient Security Principles.
Also Read SSAS Interview Questions - https://www.janbasktraining.com/blog/ssas-interview-questions/
SQL Server Reporting Service is one of the best server-based software systems that generate reports created by Microsoft. It is used for preparing and taking interactive and a variety of printed reports. It is organized through an interface that is web-based. Reporting services utilize a web service interface for supporting and developing customized reporting applications. It can compete with Crystal Reports and other business intelligence tools. This is an important answer to these kinds of SSIS interview questions for 5 years of experience.
Read in detail about SSRS Interview Questions - https://www.janbasktraining.com/blog/ssrs-interview-questions/
The SSIS connection manager has issues in storing the password. Hence we can follow the below-proposed solutions:
Method 1: Create and use SQL Server Agent Proxy account which uses credentials that makes SQL Server Agent capable of the running job as an account having required permissions to run the job or as the account which created the package.
This method is used for decrypting secrets and key requirements of the user are satisfied.
There are chances that this method could fail because the secrets are decrypted by taking the current user and current computer information which will inadvertently fail if the project or package is moved to a different computer.
Method 2: Set the value of Package Protection Level Property to Server Storage. This stores packages on the SQL Server and lets users access this through SQL Server database roles.
Method 3: Set the value of Package Protection Level property as “Encrypt Sensitive with Password”. The method uses a password for encrypting sensitive information. This can be added to the SQL Server Agent job to run the job effectively.
Method 4: Package configuration can be used to save sensitive information which can later be stored in a secured folder. When the package is run, the information is obtained from this config file. If we do not want to save the secrets in the package, we can set the property of Protection Level to “DontSaveSensitive”.
Method 5: Package templates having a good protection level can be created for long-term solutions.This is an important answer to these kinds of SSIS interview questions for 9 years experience.
MSBI is known as Microsoft Business Intelligence is a powerful tool that provides solutions for Business Intelligence and Data Mining Queries. MSB encourages users to gain access to accurate and up-to-date information for better decision-making at an organizational level. There are three tools that form the group of MSB i.e SSIS, SSAS,SSRS. This is an important answer to these kinds of SSIS interview questions and answers for 5 years experience.
Read more on MSBI Interview Questions - https://www.janbasktraining.com/blog/msbi-interview-questions/
SSIS tool is used by the database experts and can be used by them to manage the transformation. The tool has various functions that can help the users to manage the database operations. Here, we have discussed all of the possible SSIS interview questions for experienced & beginners that can be asked to any candidate for this profile.
The SSIS interview questions are not limited even if you can find many other questions that can be asked during the interview but in-depth learning of these interview questions on SSIS will help you to gain more confidence in your career.
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